tillentprs
Member
Hello,
I just picked up a Gravitar board that the seller said was working. I plugged it in, and got no picture. The LED spot killer light on the monitor was also flickering. The player one and two lights were blinking and when I tried to start a game, it made sound effects like it was trying to play blind, and a few small dots and dashes appeared in the center of the screen, like it was trying to generate a display. I know it's not the monitor, as a plugged my Black Widow PCB back in the cabinet and that plays fine. I tried putting the board into test mode, and nothing happens at all when I do that. I'm guessing the vector generating circuitry is bad on the board. Is there anybody here who could diagnose the problem and fix it? If so, how much? Thanks!
I just picked up a Gravitar board that the seller said was working. I plugged it in, and got no picture. The LED spot killer light on the monitor was also flickering. The player one and two lights were blinking and when I tried to start a game, it made sound effects like it was trying to play blind, and a few small dots and dashes appeared in the center of the screen, like it was trying to generate a display. I know it's not the monitor, as a plugged my Black Widow PCB back in the cabinet and that plays fine. I tried putting the board into test mode, and nothing happens at all when I do that. I'm guessing the vector generating circuitry is bad on the board. Is there anybody here who could diagnose the problem and fix it? If so, how much? Thanks!

